Working Paper Article Version 1 This version is not peer-reviewed

Relationship between Body and Otolith Morphological Characteristics of Sabre Squirrelfish (Sargocentron spiniferum) from the Southern Red Sea: Difference between Right and Left Otoliths

Version 1 : Received: 23 July 2021 / Approved: 26 July 2021 / Online: 26 July 2021 (10:55:07 CEST)

A peer-reviewed article of this Preprint also exists.

Osman, Y.A.A.; Mahé, K.; El-Mahdy, S.M.; Mohammad, A.S.; Mehanna, S.F. Relationship between Body and Otolith Morphological Characteristics of Sabre Squirrelfish (Sargocentron spiniferum) from the Southern Red Sea: Difference between Right and Left Otoliths. Oceans 2021, 2, 624-633. Osman, Y.A.A.; Mahé, K.; El-Mahdy, S.M.; Mohammad, A.S.; Mehanna, S.F. Relationship between Body and Otolith Morphological Characteristics of Sabre Squirrelfish (Sargocentron spiniferum) from the Southern Red Sea: Difference between Right and Left Otoliths. Oceans 2021, 2, 624-633.

Journal reference: Oceans 2021, 2, 35
DOI: 10.3390/oceans2030035

Abstract

Otolith morphology analysis is one of the main tools used for fish or fish stock identification. Moreover, otolith shape can also be used in fish dietary studies (stomach content) for the identi-fication of prey fishes and their size according to the relationship between fish and otolith sizes. In the present study, the relationship between fish length and otolith morphological dimensions was investigated for the sabre squirrelfish, Sargocentron spiniferum (Forsskål, 1775) (family: Hol-ocentridae). Samples of 185 fish were collected from the coast of the Red Sea, Egypt. To analyze the relationship between fish and otolith, otolith morphometric measurements (length, width, area, perimeter, weight, sulcus, and ostium) and shape factors (aspect ratio, compactness, form factor, rectangularity, roundness, ellipticity, squareness) describing outline shape were extracted using image analysis. Generalized linear models were applied for the relationship between body length and each otolith morphology feature. From the relationships between the total length of fish and fourteen morphology features, only otolith length, caudal length, and squareness were significantly correlated with fish size. Our results provide more information for the relationship between fish length and otolith morphometric features.

Keywords

Fish size; otolith shape; head side; Sargocentron spiniferum; Red Sea; asymmetry

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